Explore topic-wise MCQs in Ic Engine.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Ic Engine knowledge and support exam preparation. Choose a topic below to get started.

1.

The break mean effective pressure of an I.C. engine with increase in speed wil?

A. increase
B. decrease
C. remain same
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
2.

The ignition of charge by some hot surface in the engine cylinder before operation of spark plug is known as

A. auto ignition
B. pre-ignition
C. detonation
D. none of the mentioned
Answer» C. detonation
Discussion
3.

The ratio of actual cycle efficiency to that of the ideal cycle efficiency is called

A. effectiveness
B. work ratio
C. efficiency ratio
D. net efficiency
Answer» D. net efficiency
Discussion
4.

As compared to air cycle, in actual working, the effect of variation in specific heats is to

A. increase maximum pressure and maximum temperature
B. reduce maximum pressure and maximum temperature
C. increase maximum pressure and decrease maximum temperature
D. none of the mentioned
Answer» C. increase maximum pressure and decrease maximum temperature
Discussion
5.

Fuel air ratio affects maximum power output of the engine due to

A. higher specific heats
B. chemical equilibrium losses
C. all of the mentioned
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
6.

Fuel air efficiency is less than air standard efficiency by an amount equal to

A. pumping loss
B. friction loss
C. loss due to specific heat and chemical equilibrium
D. exhaust blow down loss
Answer» D. exhaust blow down loss
Discussion
7.

The ratio of the actual efficiency and the and the fuel air cycle efficiency for C.I. engines is about

A. 0.2-0.3
B. 0.5-0.6
C. 1.0
D. 0.6-0.8
Answer» E.
Discussion
8.

The actual efficiency of a good engine is about _____________ of the estimated air fuel cycle efficiency.

A. 100%
B. 85%
C. 50%
D. 25
Answer» C. 50%
Discussion